Tool-holding adapter



FIG. 1 of the drawings is a perspective view showing the front, top, and right side of a tool-holding adapter embodying the design of my invention;

FIG. 2 is an elevation view of the left side;

FIG. 3 is an elevation view of the front; and,

FIG. 4 is an elevation viwe of the back. 

The ornamental design for a tool-holding adapter, as shown. 